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Use them to automatically extract useful information from request headers without cluttering your application code.",[604,608,609,610,614,615,618,619,623],{},"All built-in enrichers are exported from ",[611,612,613],"code",{},"evlog\u002Fenrichers",". Each enricher is a factory function that returns an ",[611,616,617],{},"(ctx: EnrichContext) => void"," callback. To write your own, see ",[620,621,622],"a",{"href":513},"Custom Enrichers",".",[625,626,629,632,651],"prompt",{":actions":627,"description":628,"icon":493},"[\"copy\",\"cursor\",\"claude\"]","Add all built-in evlog enrichers",[604,630,631],{},"Add all built-in enrichers to my evlog setup.",[633,634,635,639,642,645,648],"ol",{},[636,637,638],"li",{},"Identify which framework I'm using and follow its evlog integration pattern",[636,640,641],{},"Import createUserAgentEnricher, createGeoEnricher, createRequestSizeEnricher, and createTraceContextEnricher from 'evlog\u002Fenrichers'",[636,643,644],{},"Wire the enrichers into my framework's enrich configuration",[636,646,647],{},"Enrichers add userAgent, geo, requestSize, and traceContext fields to wide events",[636,649,650],{},"All enrichers accept { overwrite?: boolean } - defaults to false to preserve user-set data",[604,652,653,654,659,660],{},"Enricher docs: ",[620,655,656],{"href":656,"rel":657},"https:\u002F\u002Fwww.evlog.dev\u002Fuse-cases\u002Fenrichers",[658],"nofollow","\nFramework setup: ",[620,661,662],{"href":662,"rel":663},"https:\u002F\u002Fwww.evlog.dev\u002Fintegrate\u002Fframeworks\u002Foverview",[658],[665,666,672],"pre",{"className":667,"code":668,"filename":669,"language":670,"meta":671,"style":671},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import {\n  createUserAgentEnricher,\n  createGeoEnricher,\n  createRequestSizeEnricher,\n  createTraceContextEnricher,\n} from 'evlog\u002Fenrichers'\n","server\u002Fplugins\u002Fevlog-enrich.ts","typescript","",[611,673,674,687,697,705,713,721],{"__ignoreMap":671},[675,676,679,683],"span",{"class":677,"line":678},"line",1,[675,680,682],{"class":681},"s7zQu","import",[675,684,686],{"class":685},"sMK4o"," {\n",[675,688,690,694],{"class":677,"line":689},2,[675,691,693],{"class":692},"sTEyZ","  createUserAgentEnricher",[675,695,696],{"class":685},",\n",[675,698,700,703],{"class":677,"line":699},3,[675,701,702],{"class":692},"  createGeoEnricher",[675,704,696],{"class":685},[675,706,708,711],{"class":677,"line":707},4,[675,709,710],{"class":692},"  createRequestSizeEnricher",[675,712,696],{"class":685},[675,714,716,719],{"class":677,"line":715},5,[675,717,718],{"class":692},"  createTraceContextEnricher",[675,720,696],{"class":685},[675,722,724,727,730,733,736],{"class":677,"line":723},6,[675,725,726],{"class":685},"}",[675,728,729],{"class":681}," from",[675,731,732],{"class":685}," '",[675,734,613],{"class":735},"sfazB",[675,737,738],{"class":685},"'\n",[740,741,743],"h2",{"id":742},"all-built-in-enrichers","All built-in enrichers",[604,745,746,747,750],{},"Use ",[611,748,749],{},"createDefaultEnrichers()"," to compose user agent, geo, request size, and trace context in one call:",[665,752,754],{"className":667,"code":753,"filename":669,"language":670,"meta":671,"style":671},"import { createDefaultEnrichers } from 'evlog\u002Fenrichers'\n\nconst enrich = createDefaultEnrichers()\n\nexport default defineNitroPlugin((nitroApp) => {\n  nitroApp.hooks.hook('evlog:enrich', enrich)\n})\n",[611,755,756,777,783,801,805,833,868],{"__ignoreMap":671},[675,757,758,760,763,766,769,771,773,775],{"class":677,"line":678},[675,759,682],{"class":681},[675,761,762],{"class":685}," {",[675,764,765],{"class":692}," createDefaultEnrichers",[675,767,768],{"class":685}," }",[675,770,729],{"class":681},[675,772,732],{"class":685},[675,774,613],{"class":735},[675,776,738],{"class":685},[675,778,779],{"class":677,"line":689},[675,780,782],{"emptyLinePlaceholder":781},true,"\n",[675,784,785,789,792,795,798],{"class":677,"line":699},[675,786,788],{"class":787},"spNyl","const",[675,790,791],{"class":692}," enrich ",[675,793,794],{"class":685},"=",[675,796,765],{"class":797},"s2Zo4",[675,799,800],{"class":692},"()\n",[675,802,803],{"class":677,"line":707},[675,804,782],{"emptyLinePlaceholder":781},[675,806,807,810,813,816,819,821,825,828,831],{"class":677,"line":715},[675,808,809],{"class":681},"export",[675,811,812],{"class":681}," default",[675,814,815],{"class":797}," defineNitroPlugin",[675,817,818],{"class":692},"(",[675,820,818],{"class":685},[675,822,824],{"class":823},"sHdIc","nitroApp",[675,826,827],{"class":685},")",[675,829,830],{"class":787}," =>",[675,832,686],{"class":685},[675,834,835,838,840,843,845,848,851,854,857,859,862,865],{"class":677,"line":723},[675,836,837],{"class":692},"  nitroApp",[675,839,623],{"class":685},[675,841,842],{"class":692},"hooks",[675,844,623],{"class":685},[675,846,847],{"class":797},"hook",[675,849,818],{"class":850},"swJcz",[675,852,853],{"class":685},"'",[675,855,856],{"class":735},"evlog:enrich",[675,858,853],{"class":685},[675,860,861],{"class":685},",",[675,863,864],{"class":692}," enrich",[675,866,867],{"class":850},")\n",[675,869,871,873],{"class":677,"line":870},7,[675,872,726],{"class":685},[675,874,867],{"class":692},[604,876,877,878,881,882,885],{},"Each enricher accepts ",[611,879,880],{},"{ overwrite?: boolean }"," (default ",[611,883,884],{},"false",") so user-set fields are preserved.",[740,887,889],{"id":888},"useragentenricher",[611,890,891],{},"userAgentEnricher()",[604,893,894,895,898],{},"Parse browser, OS, and device type from the ",[611,896,897],{},"User-Agent"," header.",[604,900,901,905,906],{},[902,903,904],"strong",{},"Sets:"," ",[611,907,908],{},"event.userAgent",[665,910,913],{"className":667,"code":911,"filename":912,"language":670,"meta":671,"style":671},"const enrich = createUserAgentEnricher()\n","user-agent-enricher.ts",[611,914,915],{"__ignoreMap":671},[675,916,917,919,921,923,926],{"class":677,"line":678},[675,918,788],{"class":787},[675,920,791],{"class":692},[675,922,794],{"class":685},[675,924,925],{"class":797}," createUserAgentEnricher",[675,927,800],{"class":692},[604,929,930],{},[902,931,932],{},"Output shape:",[665,934,937],{"className":667,"code":935,"filename":936,"language":670,"meta":671,"style":671},"interface UserAgentInfo {\n  raw: string                                      \u002F\u002F Original User-Agent string\n  browser?: { name: string; version?: string }     \u002F\u002F Chrome, Firefox, Safari, Edge\n  os?: { name: string; version?: string }          \u002F\u002F Windows, macOS, iOS, Android, Linux\n  device?: { type: 'mobile' | 'tablet' | 'desktop' | 'bot' | 'unknown' }\n}\n","user-agent-types.ts",[611,938,939,950,965,997,1025,1086],{"__ignoreMap":671},[675,940,941,944,948],{"class":677,"line":678},[675,942,943],{"class":787},"interface",[675,945,947],{"class":946},"sBMFI"," UserAgentInfo",[675,949,686],{"class":685},[675,951,952,955,958,961],{"class":677,"line":689},[675,953,954],{"class":850},"  raw",[675,956,957],{"class":685},":",[675,959,960],{"class":946}," string",[675,962,964],{"class":963},"sHwdD","                                      \u002F\u002F Original User-Agent string\n",[675,966,967,970,973,975,978,980,982,985,988,990,992,994],{"class":677,"line":699},[675,968,969],{"class":850},"  browser",[675,971,972],{"class":685},"?:",[675,974,762],{"class":685},[675,976,977],{"class":850}," name",[675,979,957],{"class":685},[675,981,960],{"class":946},[675,983,984],{"class":685},";",[675,986,987],{"class":850}," version",[675,989,972],{"class":685},[675,991,960],{"class":946},[675,993,768],{"class":685},[675,995,996],{"class":963},"     \u002F\u002F Chrome, Firefox, Safari, Edge\n",[675,998,999,1002,1004,1006,1008,1010,1012,1014,1016,1018,1020,1022],{"class":677,"line":707},[675,1000,1001],{"class":850},"  os",[675,1003,972],{"class":685},[675,1005,762],{"class":685},[675,1007,977],{"class":850},[675,1009,957],{"class":685},[675,1011,960],{"class":946},[675,1013,984],{"class":685},[675,1015,987],{"class":850},[675,1017,972],{"class":685},[675,1019,960],{"class":946},[675,1021,768],{"class":685},[675,1023,1024],{"class":963},"          \u002F\u002F Windows, macOS, iOS, Android, Linux\n",[675,1026,1027,1030,1032,1034,1037,1039,1041,1044,1046,1049,1051,1054,1056,1058,1060,1063,1065,1067,1069,1072,1074,1076,1078,1081,1083],{"class":677,"line":715},[675,1028,1029],{"class":850},"  device",[675,1031,972],{"class":685},[675,1033,762],{"class":685},[675,1035,1036],{"class":850}," type",[675,1038,957],{"class":685},[675,1040,732],{"class":685},[675,1042,1043],{"class":735},"mobile",[675,1045,853],{"class":685},[675,1047,1048],{"class":685}," |",[675,1050,732],{"class":685},[675,1052,1053],{"class":735},"tablet",[675,1055,853],{"class":685},[675,1057,1048],{"class":685},[675,1059,732],{"class":685},[675,1061,1062],{"class":735},"desktop",[675,1064,853],{"class":685},[675,1066,1048],{"class":685},[675,1068,732],{"class":685},[675,1070,1071],{"class":735},"bot",[675,1073,853],{"class":685},[675,1075,1048],{"class":685},[675,1077,732],{"class":685},[675,1079,1080],{"class":735},"unknown",[675,1082,853],{"class":685},[675,1084,1085],{"class":685}," }\n",[675,1087,1088],{"class":677,"line":723},[675,1089,1090],{"class":685},"}\n",[604,1092,1093],{},[902,1094,1095],{},"Example output:",[665,1097,1102],{"className":1098,"code":1099,"filename":1100,"language":1101,"meta":671,"style":671},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"userAgent\": {\n    \"raw\": \"Mozilla\u002F5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit\u002F537.36 Chrome\u002F120.0.0.0\",\n    \"browser\": { \"name\": \"Chrome\", \"version\": \"120.0.0.0\" },\n    \"os\": { \"name\": \"macOS\", \"version\": \"10.15.7\" },\n    \"device\": { \"type\": \"desktop\" }\n  }\n}\n","Example wide event: userAgent","json",[611,1103,1104,1109,1124,1146,1197,1244,1274,1279],{"__ignoreMap":671},[675,1105,1106],{"class":677,"line":678},[675,1107,1108],{"class":685},"{\n",[675,1110,1111,1114,1117,1120,1122],{"class":677,"line":689},[675,1112,1113],{"class":685},"  \"",[675,1115,1116],{"class":787},"userAgent",[675,1118,1119],{"class":685},"\"",[675,1121,957],{"class":685},[675,1123,686],{"class":685},[675,1125,1126,1129,1132,1134,1136,1139,1142,1144],{"class":677,"line":699},[675,1127,1128],{"class":685},"    \"",[675,1130,1131],{"class":946},"raw",[675,1133,1119],{"class":685},[675,1135,957],{"class":685},[675,1137,1138],{"class":685}," \"",[675,1140,1141],{"class":735},"Mozilla\u002F5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit\u002F537.36 Chrome\u002F120.0.0.0",[675,1143,1119],{"class":685},[675,1145,696],{"class":685},[675,1147,1148,1150,1153,1155,1157,1159,1161,1165,1167,1169,1171,1174,1176,1178,1180,1183,1185,1187,1189,1192,1194],{"class":677,"line":707},[675,1149,1128],{"class":685},[675,1151,1152],{"class":946},"browser",[675,1154,1119],{"class":685},[675,1156,957],{"class":685},[675,1158,762],{"class":685},[675,1160,1138],{"class":685},[675,1162,1164],{"class":1163},"sbssI","name",[675,1166,1119],{"class":685},[675,1168,957],{"class":685},[675,1170,1138],{"class":685},[675,1172,1173],{"class":735},"Chrome",[675,1175,1119],{"class":685},[675,1177,861],{"class":685},[675,1179,1138],{"class":685},[675,1181,1182],{"class":1163},"version",[675,1184,1119],{"class":685},[675,1186,957],{"class":685},[675,1188,1138],{"class":685},[675,1190,1191],{"class":735},"120.0.0.0",[675,1193,1119],{"class":685},[675,1195,1196],{"class":685}," },\n",[675,1198,1199,1201,1204,1206,1208,1210,1212,1214,1216,1218,1220,1223,1225,1227,1229,1231,1233,1235,1237,1240,1242],{"class":677,"line":715},[675,1200,1128],{"class":685},[675,1202,1203],{"class":946},"os",[675,1205,1119],{"class":685},[675,1207,957],{"class":685},[675,1209,762],{"class":685},[675,1211,1138],{"class":685},[675,1213,1164],{"class":1163},[675,1215,1119],{"class":685},[675,1217,957],{"class":685},[675,1219,1138],{"class":685},[675,1221,1222],{"class":735},"macOS",[675,1224,1119],{"class":685},[675,1226,861],{"class":685},[675,1228,1138],{"class":685},[675,1230,1182],{"class":1163},[675,1232,1119],{"class":685},[675,1234,957],{"class":685},[675,1236,1138],{"class":685},[675,1238,1239],{"class":735},"10.15.7",[675,1241,1119],{"class":685},[675,1243,1196],{"class":685},[675,1245,1246,1248,1251,1253,1255,1257,1259,1262,1264,1266,1268,1270,1272],{"class":677,"line":723},[675,1247,1128],{"class":685},[675,1249,1250],{"class":946},"device",[675,1252,1119],{"class":685},[675,1254,957],{"class":685},[675,1256,762],{"class":685},[675,1258,1138],{"class":685},[675,1260,1261],{"class":1163},"type",[675,1263,1119],{"class":685},[675,1265,957],{"class":685},[675,1267,1138],{"class":685},[675,1269,1062],{"class":735},[675,1271,1119],{"class":685},[675,1273,1085],{"class":685},[675,1275,1276],{"class":677,"line":870},[675,1277,1278],{"class":685},"  }\n",[675,1280,1282],{"class":677,"line":1281},8,[675,1283,1090],{"class":685},[604,1285,1286,1289],{},[902,1287,1288],{},"Detected browsers:"," Edge, Chrome, Firefox, Safari (checked in order, Edge before Chrome to avoid false matches).",[604,1291,1292,1295],{},[902,1293,1294],{},"Detected devices:"," Bot (crawlers, spiders), Tablet (iPad), Mobile (iPhone, Android phones), Desktop (fallback).",[740,1297,1299],{"id":1298},"geoenricher",[611,1300,1301],{},"geoEnricher()",[604,1303,1304],{},"Extract geographic data from platform-injected headers.",[604,1306,1307,905,1309],{},[902,1308,904],{},[611,1310,1311],{},"event.geo",[665,1313,1316],{"className":667,"code":1314,"filename":1315,"language":670,"meta":671,"style":671},"const enrich = createGeoEnricher()\n","geo-enricher.ts",[611,1317,1318],{"__ignoreMap":671},[675,1319,1320,1322,1324,1326,1329],{"class":677,"line":678},[675,1321,788],{"class":787},[675,1323,791],{"class":692},[675,1325,794],{"class":685},[675,1327,1328],{"class":797}," createGeoEnricher",[675,1330,800],{"class":692},[604,1332,1333],{},[902,1334,932],{},[665,1336,1339],{"className":667,"code":1337,"filename":1338,"language":670,"meta":671,"style":671},"interface GeoInfo {\n  country?: string      \u002F\u002F ISO country code (e.g., \"US\", \"FR\")\n  region?: string       \u002F\u002F Region\u002Fstate name\n  regionCode?: string   \u002F\u002F Region code\n  city?: string         \u002F\u002F City name\n  latitude?: number     \u002F\u002F Decimal latitude\n  longitude?: number    \u002F\u002F Decimal longitude\n}\n","geo-types.ts",[611,1340,1341,1350,1362,1374,1386,1398,1411,1423],{"__ignoreMap":671},[675,1342,1343,1345,1348],{"class":677,"line":678},[675,1344,943],{"class":787},[675,1346,1347],{"class":946}," GeoInfo",[675,1349,686],{"class":685},[675,1351,1352,1355,1357,1359],{"class":677,"line":689},[675,1353,1354],{"class":850},"  country",[675,1356,972],{"class":685},[675,1358,960],{"class":946},[675,1360,1361],{"class":963},"      \u002F\u002F ISO country code (e.g., \"US\", \"FR\")\n",[675,1363,1364,1367,1369,1371],{"class":677,"line":699},[675,1365,1366],{"class":850},"  region",[675,1368,972],{"class":685},[675,1370,960],{"class":946},[675,1372,1373],{"class":963},"       \u002F\u002F Region\u002Fstate name\n",[675,1375,1376,1379,1381,1383],{"class":677,"line":707},[675,1377,1378],{"class":850},"  regionCode",[675,1380,972],{"class":685},[675,1382,960],{"class":946},[675,1384,1385],{"class":963},"   \u002F\u002F Region code\n",[675,1387,1388,1391,1393,1395],{"class":677,"line":715},[675,1389,1390],{"class":850},"  city",[675,1392,972],{"class":685},[675,1394,960],{"class":946},[675,1396,1397],{"class":963},"         \u002F\u002F City name\n",[675,1399,1400,1403,1405,1408],{"class":677,"line":723},[675,1401,1402],{"class":850},"  latitude",[675,1404,972],{"class":685},[675,1406,1407],{"class":946}," number",[675,1409,1410],{"class":963},"     \u002F\u002F Decimal latitude\n",[675,1412,1413,1416,1418,1420],{"class":677,"line":870},[675,1414,1415],{"class":850},"  longitude",[675,1417,972],{"class":685},[675,1419,1407],{"class":946},[675,1421,1422],{"class":963},"    \u002F\u002F Decimal longitude\n",[675,1424,1425],{"class":677,"line":1281},[675,1426,1090],{"class":685},[604,1428,1429],{},[902,1430,1431],{},"Supported platforms:",[1433,1434,1435,1451],"table",{},[1436,1437,1438],"thead",{},[1439,1440,1441,1445,1448],"tr",{},[1442,1443,1444],"th",{},"Platform",[1442,1446,1447],{},"Headers",[1442,1449,1450],{},"Coverage",[1452,1453,1454,1481],"tbody",{},[1439,1455,1456,1460,1478],{},[1457,1458,1459],"td",{},"Vercel",[1457,1461,1462,1465,1466,1465,1469,1465,1472,1465,1475],{},[611,1463,1464],{},"x-vercel-ip-country",", ",[611,1467,1468],{},"x-vercel-ip-country-region",[611,1470,1471],{},"x-vercel-ip-city",[611,1473,1474],{},"x-vercel-ip-latitude",[611,1476,1477],{},"x-vercel-ip-longitude",[1457,1479,1480],{},"Full",[1439,1482,1483,1486,1491],{},[1457,1484,1485],{},"Cloudflare",[1457,1487,1488],{},[611,1489,1490],{},"cf-ipcountry",[1457,1492,1493],{},"Country only",[1495,1496,1498,1501,1502,1504,1505,1465,1508,1465,1511,1514,1515,1518,1519,1522,1523,1525,1526,1529],"callout",{"color":1497,"icon":13},"info",[902,1499,1500],{},"Cloudflare note:"," Only ",[611,1503,1490],{}," is a standard Cloudflare HTTP header. Other geo fields (",[611,1506,1507],{},"city",[611,1509,1510],{},"region",[611,1512,1513],{},"latitude",", etc.) are properties of ",[611,1516,1517],{},"request.cf",", which is not exposed as headers. For full Cloudflare geo data, write a ",[620,1520,1521],{"href":513},"custom enricher"," that reads ",[611,1524,1517],{},", or use a Workers middleware to copy ",[611,1527,1528],{},"cf"," properties into custom headers.",[740,1531,1533],{"id":1532},"requestsizeenricher",[611,1534,1535],{},"requestSizeEnricher()",[604,1537,1538,1539,1542],{},"Capture request and response payload sizes from ",[611,1540,1541],{},"Content-Length"," headers.",[604,1544,1545,905,1547],{},[902,1546,904],{},[611,1548,1549],{},"event.requestSize",[665,1551,1554],{"className":667,"code":1552,"filename":1553,"language":670,"meta":671,"style":671},"const enrich = createRequestSizeEnricher()\n","request-size-enricher.ts",[611,1555,1556],{"__ignoreMap":671},[675,1557,1558,1560,1562,1564,1567],{"class":677,"line":678},[675,1559,788],{"class":787},[675,1561,791],{"class":692},[675,1563,794],{"class":685},[675,1565,1566],{"class":797}," createRequestSizeEnricher",[675,1568,800],{"class":692},[604,1570,1571],{},[902,1572,932],{},[665,1574,1577],{"className":667,"code":1575,"filename":1576,"language":670,"meta":671,"style":671},"interface RequestSizeInfo {\n  requestBytes?: number    \u002F\u002F Request Content-Length\n  responseBytes?: number   \u002F\u002F Response Content-Length\n}\n","request-size-types.ts",[611,1578,1579,1588,1600,1612],{"__ignoreMap":671},[675,1580,1581,1583,1586],{"class":677,"line":678},[675,1582,943],{"class":787},[675,1584,1585],{"class":946}," RequestSizeInfo",[675,1587,686],{"class":685},[675,1589,1590,1593,1595,1597],{"class":677,"line":689},[675,1591,1592],{"class":850},"  requestBytes",[675,1594,972],{"class":685},[675,1596,1407],{"class":946},[675,1598,1599],{"class":963},"    \u002F\u002F Request Content-Length\n",[675,1601,1602,1605,1607,1609],{"class":677,"line":699},[675,1603,1604],{"class":850},"  responseBytes",[675,1606,972],{"class":685},[675,1608,1407],{"class":946},[675,1610,1611],{"class":963},"   \u002F\u002F Response Content-Length\n",[675,1613,1614],{"class":677,"line":707},[675,1615,1090],{"class":685},[604,1617,1618],{},[902,1619,1095],{},[665,1621,1624],{"className":1098,"code":1622,"filename":1623,"language":1101,"meta":671,"style":671},"{\n  \"requestSize\": {\n    \"requestBytes\": 1234,\n    \"responseBytes\": 5678\n  }\n}\n","Example wide event: requestSize",[611,1625,1626,1630,1643,1659,1673,1677],{"__ignoreMap":671},[675,1627,1628],{"class":677,"line":678},[675,1629,1108],{"class":685},[675,1631,1632,1634,1637,1639,1641],{"class":677,"line":689},[675,1633,1113],{"class":685},[675,1635,1636],{"class":787},"requestSize",[675,1638,1119],{"class":685},[675,1640,957],{"class":685},[675,1642,686],{"class":685},[675,1644,1645,1647,1650,1652,1654,1657],{"class":677,"line":699},[675,1646,1128],{"class":685},[675,1648,1649],{"class":946},"requestBytes",[675,1651,1119],{"class":685},[675,1653,957],{"class":685},[675,1655,1656],{"class":1163}," 1234",[675,1658,696],{"class":685},[675,1660,1661,1663,1666,1668,1670],{"class":677,"line":707},[675,1662,1128],{"class":685},[675,1664,1665],{"class":946},"responseBytes",[675,1667,1119],{"class":685},[675,1669,957],{"class":685},[675,1671,1672],{"class":1163}," 5678\n",[675,1674,1675],{"class":677,"line":715},[675,1676,1278],{"class":685},[675,1678,1679],{"class":677,"line":723},[675,1680,1090],{"class":685},[1495,1682,1683,1684,1686,1687,623],{"color":1497,"icon":13},"This enricher reads the ",[611,1685,1541],{}," header from both the request and response. If the header is missing (e.g., for chunked transfer encoding), the corresponding field will be ",[611,1688,1689],{},"undefined",[740,1691,1693],{"id":1692},"tracecontextenricher",[611,1694,1695],{},"traceContextEnricher()",[604,1697,1698,1699,1702,1703,1542],{},"Extract W3C trace context from the ",[611,1700,1701],{},"traceparent"," and ",[611,1704,1705],{},"tracestate",[604,1707,1708,905,1710,1465,1713,1465,1716],{},[902,1709,904],{},[611,1711,1712],{},"event.traceContext",[611,1714,1715],{},"event.traceId",[611,1717,1718],{},"event.spanId",[665,1720,1723],{"className":667,"code":1721,"filename":1722,"language":670,"meta":671,"style":671},"const enrich = createTraceContextEnricher()\n","trace-context-enricher.ts",[611,1724,1725],{"__ignoreMap":671},[675,1726,1727,1729,1731,1733,1736],{"class":677,"line":678},[675,1728,788],{"class":787},[675,1730,791],{"class":692},[675,1732,794],{"class":685},[675,1734,1735],{"class":797}," createTraceContextEnricher",[675,1737,800],{"class":692},[604,1739,1740],{},[902,1741,932],{},[665,1743,1746],{"className":667,"code":1744,"filename":1745,"language":670,"meta":671,"style":671},"interface TraceContextInfo {\n  traceparent?: string   \u002F\u002F Full traceparent header value\n  tracestate?: string    \u002F\u002F Full tracestate header value\n  traceId?: string       \u002F\u002F 32-char hex trace ID (parsed from traceparent)\n  spanId?: string        \u002F\u002F 16-char hex span ID (parsed from traceparent)\n}\n","trace-context-types.ts",[611,1747,1748,1757,1769,1781,1793,1805],{"__ignoreMap":671},[675,1749,1750,1752,1755],{"class":677,"line":678},[675,1751,943],{"class":787},[675,1753,1754],{"class":946}," TraceContextInfo",[675,1756,686],{"class":685},[675,1758,1759,1762,1764,1766],{"class":677,"line":689},[675,1760,1761],{"class":850},"  traceparent",[675,1763,972],{"class":685},[675,1765,960],{"class":946},[675,1767,1768],{"class":963},"   \u002F\u002F Full traceparent header value\n",[675,1770,1771,1774,1776,1778],{"class":677,"line":699},[675,1772,1773],{"class":850},"  tracestate",[675,1775,972],{"class":685},[675,1777,960],{"class":946},[675,1779,1780],{"class":963},"    \u002F\u002F Full tracestate header value\n",[675,1782,1783,1786,1788,1790],{"class":677,"line":707},[675,1784,1785],{"class":850},"  traceId",[675,1787,972],{"class":685},[675,1789,960],{"class":946},[675,1791,1792],{"class":963},"       \u002F\u002F 32-char hex trace ID (parsed from traceparent)\n",[675,1794,1795,1798,1800,1802],{"class":677,"line":715},[675,1796,1797],{"class":850},"  spanId",[675,1799,972],{"class":685},[675,1801,960],{"class":946},[675,1803,1804],{"class":963},"        \u002F\u002F 16-char hex span ID (parsed from traceparent)\n",[675,1806,1807],{"class":677,"line":723},[675,1808,1090],{"class":685},[604,1810,1811],{},[902,1812,1095],{},[665,1814,1817],{"className":1098,"code":1815,"filename":1816,"language":1101,"meta":671,"style":671},"{\n  \"traceContext\": {\n    \"traceparent\": \"00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01\",\n    \"traceId\": \"4bf92f3577b34da6a3ce929d0e0e4736\",\n    \"spanId\": \"00f067aa0ba902b7\"\n  },\n  \"traceId\": \"4bf92f3577b34da6a3ce929d0e0e4736\",\n  \"spanId\": \"00f067aa0ba902b7\"\n}\n","Example wide event: traceContext",[611,1818,1819,1823,1836,1855,1875,1894,1899,1917,1933],{"__ignoreMap":671},[675,1820,1821],{"class":677,"line":678},[675,1822,1108],{"class":685},[675,1824,1825,1827,1830,1832,1834],{"class":677,"line":689},[675,1826,1113],{"class":685},[675,1828,1829],{"class":787},"traceContext",[675,1831,1119],{"class":685},[675,1833,957],{"class":685},[675,1835,686],{"class":685},[675,1837,1838,1840,1842,1844,1846,1848,1851,1853],{"class":677,"line":699},[675,1839,1128],{"class":685},[675,1841,1701],{"class":946},[675,1843,1119],{"class":685},[675,1845,957],{"class":685},[675,1847,1138],{"class":685},[675,1849,1850],{"class":735},"00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",[675,1852,1119],{"class":685},[675,1854,696],{"class":685},[675,1856,1857,1859,1862,1864,1866,1868,1871,1873],{"class":677,"line":707},[675,1858,1128],{"class":685},[675,1860,1861],{"class":946},"traceId",[675,1863,1119],{"class":685},[675,1865,957],{"class":685},[675,1867,1138],{"class":685},[675,1869,1870],{"class":735},"4bf92f3577b34da6a3ce929d0e0e4736",[675,1872,1119],{"class":685},[675,1874,696],{"class":685},[675,1876,1877,1879,1882,1884,1886,1888,1891],{"class":677,"line":715},[675,1878,1128],{"class":685},[675,1880,1881],{"class":946},"spanId",[675,1883,1119],{"class":685},[675,1885,957],{"class":685},[675,1887,1138],{"class":685},[675,1889,1890],{"class":735},"00f067aa0ba902b7",[675,1892,1893],{"class":685},"\"\n",[675,1895,1896],{"class":677,"line":723},[675,1897,1898],{"class":685},"  },\n",[675,1900,1901,1903,1905,1907,1909,1911,1913,1915],{"class":677,"line":870},[675,1902,1113],{"class":685},[675,1904,1861],{"class":787},[675,1906,1119],{"class":685},[675,1908,957],{"class":685},[675,1910,1138],{"class":685},[675,1912,1870],{"class":735},[675,1914,1119],{"class":685},[675,1916,696],{"class":685},[675,1918,1919,1921,1923,1925,1927,1929,1931],{"class":677,"line":1281},[675,1920,1113],{"class":685},[675,1922,1881],{"class":787},[675,1924,1119],{"class":685},[675,1926,957],{"class":685},[675,1928,1138],{"class":685},[675,1930,1890],{"class":735},[675,1932,1893],{"class":685},[675,1934,1936],{"class":677,"line":1935},9,[675,1937,1090],{"class":685},[604,1939,1940,1702,1942,1944],{},[611,1941,1861],{},[611,1943,1881],{}," are also set at the top level of the event for easy querying and correlation.",[1495,1946,1947,1948,1953,1954,623],{"color":1497,"icon":13},"The traceparent format follows the ",[620,1949,1952],{"href":1950,"rel":1951},"https:\u002F\u002Fwww.w3.org\u002FTR\u002Ftrace-context\u002F",[658],"W3C Trace Context"," specification: ",[611,1955,1956],{},"{version}-{traceId}-{spanId}-{flags}",[740,1958,1960],{"id":1959},"wire-all-four-at-once","Wire all four at once",[604,1962,1963],{},"Use all built-in enrichers together. The list of enrichers is identical across frameworks. Only the wiring changes.",[1965,1966,1967,2191,2425,2573],"code-group",{},[665,1968,1971],{"className":667,"code":1969,"filename":1970,"language":670,"meta":671,"style":671},"\u002F\u002F server\u002Fplugins\u002Fevlog-enrich.ts\nimport {\n  createUserAgentEnricher,\n  createGeoEnricher,\n  createRequestSizeEnricher,\n  createTraceContextEnricher,\n} from 'evlog\u002Fenrichers'\n\nexport default defineNitroPlugin((nitroApp) => {\n  const enrichers = [\n    createUserAgentEnricher(),\n    createGeoEnricher(),\n    createRequestSizeEnricher(),\n    createTraceContextEnricher(),\n  ]\n\n  nitroApp.hooks.hook('evlog:enrich', (ctx) => {\n    for (const enricher of enrichers) enricher(ctx)\n  })\n})\n","Nuxt \u002F Nitro",[611,1972,1973,1978,1984,1990,1996,2002,2008,2020,2024,2044,2059,2070,2080,2090,2100,2106,2111,2146,2176,2184],{"__ignoreMap":671},[675,1974,1975],{"class":677,"line":678},[675,1976,1977],{"class":963},"\u002F\u002F server\u002Fplugins\u002Fevlog-enrich.ts\n",[675,1979,1980,1982],{"class":677,"line":689},[675,1981,682],{"class":681},[675,1983,686],{"class":685},[675,1985,1986,1988],{"class":677,"line":699},[675,1987,693],{"class":692},[675,1989,696],{"class":685},[675,1991,1992,1994],{"class":677,"line":707},[675,1993,702],{"class":692},[675,1995,696],{"class":685},[675,1997,1998,2000],{"class":677,"line":715},[675,1999,710],{"class":692},[675,2001,696],{"class":685},[675,2003,2004,2006],{"class":677,"line":723},[675,2005,718],{"class":692},[675,2007,696],{"class":685},[675,2009,2010,2012,2014,2016,2018],{"class":677,"line":870},[675,2011,726],{"class":685},[675,2013,729],{"class":681},[675,2015,732],{"class":685},[675,2017,613],{"class":735},[675,2019,738],{"class":685},[675,2021,2022],{"class":677,"line":1281},[675,2023,782],{"emptyLinePlaceholder":781},[675,2025,2026,2028,2030,2032,2034,2036,2038,2040,2042],{"class":677,"line":1935},[675,2027,809],{"class":681},[675,2029,812],{"class":681},[675,2031,815],{"class":797},[675,2033,818],{"class":692},[675,2035,818],{"class":685},[675,2037,824],{"class":823},[675,2039,827],{"class":685},[675,2041,830],{"class":787},[675,2043,686],{"class":685},[675,2045,2047,2050,2053,2056],{"class":677,"line":2046},10,[675,2048,2049],{"class":787},"  const",[675,2051,2052],{"class":692}," enrichers",[675,2054,2055],{"class":685}," =",[675,2057,2058],{"class":850}," [\n",[675,2060,2062,2065,2068],{"class":677,"line":2061},11,[675,2063,2064],{"class":797},"    createUserAgentEnricher",[675,2066,2067],{"class":850},"()",[675,2069,696],{"class":685},[675,2071,2073,2076,2078],{"class":677,"line":2072},12,[675,2074,2075],{"class":797},"    createGeoEnricher",[675,2077,2067],{"class":850},[675,2079,696],{"class":685},[675,2081,2083,2086,2088],{"class":677,"line":2082},13,[675,2084,2085],{"class":797},"    createRequestSizeEnricher",[675,2087,2067],{"class":850},[675,2089,696],{"class":685},[675,2091,2093,2096,2098],{"class":677,"line":2092},14,[675,2094,2095],{"class":797},"    createTraceContextEnricher",[675,2097,2067],{"class":850},[675,2099,696],{"class":685},[675,2101,2103],{"class":677,"line":2102},15,[675,2104,2105],{"class":850},"  ]\n",[675,2107,2109],{"class":677,"line":2108},16,[675,2110,782],{"emptyLinePlaceholder":781},[675,2112,2114,2116,2118,2120,2122,2124,2126,2128,2130,2132,2134,2137,2140,2142,2144],{"class":677,"line":2113},17,[675,2115,837],{"class":692},[675,2117,623],{"class":685},[675,2119,842],{"class":692},[675,2121,623],{"class":685},[675,2123,847],{"class":797},[675,2125,818],{"class":850},[675,2127,853],{"class":685},[675,2129,856],{"class":735},[675,2131,853],{"class":685},[675,2133,861],{"class":685},[675,2135,2136],{"class":685}," (",[675,2138,2139],{"class":823},"ctx",[675,2141,827],{"class":685},[675,2143,830],{"class":787},[675,2145,686],{"class":685},[675,2147,2149,2152,2154,2156,2159,2162,2164,2167,2170,2172,2174],{"class":677,"line":2148},18,[675,2150,2151],{"class":681},"    for",[675,2153,2136],{"class":850},[675,2155,788],{"class":787},[675,2157,2158],{"class":692}," enricher",[675,2160,2161],{"class":685}," of",[675,2163,2052],{"class":692},[675,2165,2166],{"class":850},") ",[675,2168,2169],{"class":797},"enricher",[675,2171,818],{"class":850},[675,2173,2139],{"class":692},[675,2175,867],{"class":850},[675,2177,2179,2182],{"class":677,"line":2178},19,[675,2180,2181],{"class":685},"  }",[675,2183,867],{"class":850},[675,2185,2187,2189],{"class":677,"line":2186},20,[675,2188,726],{"class":685},[675,2190,867],{"class":692},[665,2192,2194],{"className":667,"code":2193,"filename":245,"language":670,"meta":671,"style":671},"\u002F\u002F lib\u002Fevlog.ts\nimport { createEvlog } from 'evlog\u002Fnext'\nimport {\n  createUserAgentEnricher,\n  createGeoEnricher,\n  createRequestSizeEnricher,\n  createTraceContextEnricher,\n} from 'evlog\u002Fenrichers'\n\nconst enrichers = [\n  createUserAgentEnricher(),\n  createGeoEnricher(),\n  createRequestSizeEnricher(),\n  createTraceContextEnricher(),\n]\n\nexport const { withEvlog, useLogger, log, createError } = createEvlog({\n  service: 'my-app',\n  enrich: (ctx) => {\n    for (const enricher of enrichers) enricher(ctx)\n  },\n})\n",[611,2195,2196,2201,2221,2227,2233,2239,2245,2251,2263,2267,2278,2286,2294,2302,2310,2315,2319,2356,2372,2389,2413,2418],{"__ignoreMap":671},[675,2197,2198],{"class":677,"line":678},[675,2199,2200],{"class":963},"\u002F\u002F lib\u002Fevlog.ts\n",[675,2202,2203,2205,2207,2210,2212,2214,2216,2219],{"class":677,"line":689},[675,2204,682],{"class":681},[675,2206,762],{"class":685},[675,2208,2209],{"class":692}," createEvlog",[675,2211,768],{"class":685},[675,2213,729],{"class":681},[675,2215,732],{"class":685},[675,2217,2218],{"class":735},"evlog\u002Fnext",[675,2220,738],{"class":685},[675,2222,2223,2225],{"class":677,"line":699},[675,2224,682],{"class":681},[675,2226,686],{"class":685},[675,2228,2229,2231],{"class":677,"line":707},[675,2230,693],{"class":692},[675,2232,696],{"class":685},[675,2234,2235,2237],{"class":677,"line":715},[675,2236,702],{"class":692},[675,2238,696],{"class":685},[675,2240,2241,2243],{"class":677,"line":723},[675,2242,710],{"class":692},[675,2244,696],{"class":685},[675,2246,2247,2249],{"class":677,"line":870},[675,2248,718],{"class":692},[675,2250,696],{"class":685},[675,2252,2253,2255,2257,2259,2261],{"class":677,"line":1281},[675,2254,726],{"class":685},[675,2256,729],{"class":681},[675,2258,732],{"class":685},[675,2260,613],{"class":735},[675,2262,738],{"class":685},[675,2264,2265],{"class":677,"line":1935},[675,2266,782],{"emptyLinePlaceholder":781},[675,2268,2269,2271,2274,2276],{"class":677,"line":2046},[675,2270,788],{"class":787},[675,2272,2273],{"class":692}," enrichers ",[675,2275,794],{"class":685},[675,2277,2058],{"class":692},[675,2279,2280,2282,2284],{"class":677,"line":2061},[675,2281,693],{"class":797},[675,2283,2067],{"class":692},[675,2285,696],{"class":685},[675,2287,2288,2290,2292],{"class":677,"line":2072},[675,2289,702],{"class":797},[675,2291,2067],{"class":692},[675,2293,696],{"class":685},[675,2295,2296,2298,2300],{"class":677,"line":2082},[675,2297,710],{"class":797},[675,2299,2067],{"class":692},[675,2301,696],{"class":685},[675,2303,2304,2306,2308],{"class":677,"line":2092},[675,2305,718],{"class":797},[675,2307,2067],{"class":692},[675,2309,696],{"class":685},[675,2311,2312],{"class":677,"line":2102},[675,2313,2314],{"class":692},"]\n",[675,2316,2317],{"class":677,"line":2108},[675,2318,782],{"emptyLinePlaceholder":781},[675,2320,2321,2323,2326,2328,2331,2333,2336,2338,2341,2343,2346,2348,2350,2352,2354],{"class":677,"line":2113},[675,2322,809],{"class":681},[675,2324,2325],{"class":787}," const",[675,2327,762],{"class":685},[675,2329,2330],{"class":692}," withEvlog",[675,2332,861],{"class":685},[675,2334,2335],{"class":692}," useLogger",[675,2337,861],{"class":685},[675,2339,2340],{"class":692}," log",[675,2342,861],{"class":685},[675,2344,2345],{"class":692}," createError ",[675,2347,726],{"class":685},[675,2349,2055],{"class":685},[675,2351,2209],{"class":797},[675,2353,818],{"class":692},[675,2355,1108],{"class":685},[675,2357,2358,2361,2363,2365,2368,2370],{"class":677,"line":2148},[675,2359,2360],{"class":850},"  service",[675,2362,957],{"class":685},[675,2364,732],{"class":685},[675,2366,2367],{"class":735},"my-app",[675,2369,853],{"class":685},[675,2371,696],{"class":685},[675,2373,2374,2377,2379,2381,2383,2385,2387],{"class":677,"line":2178},[675,2375,2376],{"class":797},"  enrich",[675,2378,957],{"class":685},[675,2380,2136],{"class":685},[675,2382,2139],{"class":823},[675,2384,827],{"class":685},[675,2386,830],{"class":787},[675,2388,686],{"class":685},[675,2390,2391,2393,2395,2397,2399,2401,2403,2405,2407,2409,2411],{"class":677,"line":2186},[675,2392,2151],{"class":681},[675,2394,2136],{"class":850},[675,2396,788],{"class":787},[675,2398,2158],{"class":692},[675,2400,2161],{"class":685},[675,2402,2052],{"class":692},[675,2404,2166],{"class":850},[675,2406,2169],{"class":797},[675,2408,818],{"class":850},[675,2410,2139],{"class":692},[675,2412,867],{"class":850},[675,2414,2416],{"class":677,"line":2415},21,[675,2417,1898],{"class":685},[675,2419,2421,2423],{"class":677,"line":2420},22,[675,2422,726],{"class":685},[675,2424,867],{"class":692},[665,2426,2429],{"className":667,"code":2427,"filename":2428,"language":670,"meta":671,"style":671},"import {\n  createUserAgentEnricher,\n  createGeoEnricher,\n  createRequestSizeEnricher,\n  createTraceContextEnricher,\n} from 'evlog\u002Fenrichers'\n\nconst enrichers = [\n  createUserAgentEnricher(),\n  createGeoEnricher(),\n  createRequestSizeEnricher(),\n  createTraceContextEnricher(),\n]\n\napp.use(evlog({ enrichers })) \u002F\u002F Hono \u002F Express \u002F Elysia\n\u002F\u002F await app.register(evlog, { enrichers }) \u002F\u002F Fastify\n\u002F\u002F EvlogModule.forRoot({ enrichers }) \u002F\u002F NestJS\n","Hono \u002F Express \u002F Fastify \u002F Elysia \u002F NestJS",[611,2430,2431,2437,2443,2449,2455,2461,2473,2477,2487,2495,2503,2511,2519,2523,2527,2557,2565],{"__ignoreMap":671},[675,2432,2433,2435],{"class":677,"line":678},[675,2434,682],{"class":681},[675,2436,686],{"class":685},[675,2438,2439,2441],{"class":677,"line":689},[675,2440,693],{"class":692},[675,2442,696],{"class":685},[675,2444,2445,2447],{"class":677,"line":699},[675,2446,702],{"class":692},[675,2448,696],{"class":685},[675,2450,2451,2453],{"class":677,"line":707},[675,2452,710],{"class":692},[675,2454,696],{"class":685},[675,2456,2457,2459],{"class":677,"line":715},[675,2458,718],{"class":692},[675,2460,696],{"class":685},[675,2462,2463,2465,2467,2469,2471],{"class":677,"line":723},[675,2464,726],{"class":685},[675,2466,729],{"class":681},[675,2468,732],{"class":685},[675,2470,613],{"class":735},[675,2472,738],{"class":685},[675,2474,2475],{"class":677,"line":870},[675,2476,782],{"emptyLinePlaceholder":781},[675,2478,2479,2481,2483,2485],{"class":677,"line":1281},[675,2480,788],{"class":787},[675,2482,2273],{"class":692},[675,2484,794],{"class":685},[675,2486,2058],{"class":692},[675,2488,2489,2491,2493],{"class":677,"line":1935},[675,2490,693],{"class":797},[675,2492,2067],{"class":692},[675,2494,696],{"class":685},[675,2496,2497,2499,2501],{"class":677,"line":2046},[675,2498,702],{"class":797},[675,2500,2067],{"class":692},[675,2502,696],{"class":685},[675,2504,2505,2507,2509],{"class":677,"line":2061},[675,2506,710],{"class":797},[675,2508,2067],{"class":692},[675,2510,696],{"class":685},[675,2512,2513,2515,2517],{"class":677,"line":2072},[675,2514,718],{"class":797},[675,2516,2067],{"class":692},[675,2518,696],{"class":685},[675,2520,2521],{"class":677,"line":2082},[675,2522,2314],{"class":692},[675,2524,2525],{"class":677,"line":2092},[675,2526,782],{"emptyLinePlaceholder":781},[675,2528,2529,2532,2534,2537,2539,2542,2544,2547,2549,2551,2554],{"class":677,"line":2102},[675,2530,2531],{"class":692},"app",[675,2533,623],{"class":685},[675,2535,2536],{"class":797},"use",[675,2538,818],{"class":692},[675,2540,2541],{"class":797},"evlog",[675,2543,818],{"class":692},[675,2545,2546],{"class":685},"{",[675,2548,2273],{"class":692},[675,2550,726],{"class":685},[675,2552,2553],{"class":692},")) ",[675,2555,2556],{"class":963},"\u002F\u002F Hono \u002F Express \u002F Elysia\n",[675,2558,2559,2562],{"class":677,"line":2108},[675,2560,2561],{"class":963},"\u002F\u002F await app.register(evlog, { enrichers })",[675,2563,2564],{"class":963}," \u002F\u002F Fastify\n",[675,2566,2567,2570],{"class":677,"line":2113},[675,2568,2569],{"class":963},"\u002F\u002F EvlogModule.forRoot({ enrichers })",[675,2571,2572],{"class":963}," \u002F\u002F NestJS\n",[665,2574,2576],{"className":667,"code":2575,"filename":300,"language":670,"meta":671,"style":671},"\u002F\u002F index.ts\nimport { initLogger } from 'evlog'\nimport {\n  createUserAgentEnricher,\n  createGeoEnricher,\n  createRequestSizeEnricher,\n  createTraceContextEnricher,\n} from 'evlog\u002Fenrichers'\n\ninitLogger({\n  enrichers: [\n    createUserAgentEnricher(),\n    createGeoEnricher(),\n    createRequestSizeEnricher(),\n    createTraceContextEnricher(),\n  ],\n})\n",[611,2577,2578,2583,2602,2608,2614,2620,2626,2632,2644,2648,2657,2666,2674,2682,2690,2698,2705],{"__ignoreMap":671},[675,2579,2580],{"class":677,"line":678},[675,2581,2582],{"class":963},"\u002F\u002F index.ts\n",[675,2584,2585,2587,2589,2592,2594,2596,2598,2600],{"class":677,"line":689},[675,2586,682],{"class":681},[675,2588,762],{"class":685},[675,2590,2591],{"class":692}," 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